It's not that he hasn't been eating. It's that he hasn't been able to muster the energy to do much more than unwrap a granola bar or a stick of beef jerky or open a packet of chips, once or twice a day. And even at that rate, he's run out.

He made himself take a shower yesterday, which means his clothes have only been slept in once, so he can probably make it through the bar without attracting too much attention. There's a baseball cap to hide his bedhead, and obscure his face a little. If he's lucky, maybe he won't run into anyone he knows.